When Considering Whether the Density of the Universe Is Above

Multiple Choice

When considering whether the density of the universe is above or below the critical density,what needs to be included in the measurement of density?

A) ordinary matter
B) ordinary matter and dark matter
C) ordinary matter, neutrinos, gravity waves and electromagnetic energy
D) ordinary matter, dark matter and electromagnetic energy
E) ordinary matter, dark matter, neutrinos, gravity waves, electromagnetic energy and darkenergy